On 2012-02-28, Camiel Dobbelaar <c...@sentia.nl> wrote:
> On 27-2-2012 22:22, Hrvoje Popovski wrote:
>> i'm having problem with ftp communication. when ftp client behind
>> openbsd 5.0 firewall connects to ftp server or servers
>> they see 425: Securiy: Bad IP connecting.
>> 
>> openbsd has random nat with pool of /27 public addresess and inside
>> hosts connect through that pool.
>> when ftp-proxy is enabled or nat is configured without random nat
>> option, everything is working like charm. problem is that i need that
>> crazy random stuff :)
>> is there any option to rotate ip adrese per ftp session?
>
> There is no such option in ftp-proxy.
>
> What _might_ work is to run one ftp-proxy per IP (30 in your case) and
> use "random" on the divert-to.
>
><5 minutes later>
>
> I just tried it, and it does not work...  divert-to does not support
> random like rdr-to does.
>
> --
> Cam
>
>

*not* tested but you could probably run a couple of ftp-proxy
instances on different ports and use 'probability' rules to hit the
right one.

btw: that random stuff, at least without source-tracking, is
likely to break bank websites etc.

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